create axis label with appropriate labels
create axis label with appropriate labels
plot unit objects
make_unit_label(lab, u, sep = units_options("sep"),
group = units_options("group"), parse = units_options("parse"))
## S3 method for class 'units'
plot(x, y, xlab = NULL, ylab = NULL, ...)lab |
length one character; name of the variable to plot |
u |
vector of class |
sep |
length two character vector, defaulting to |
group |
length two character vector with grouping symbols, e.g.
|
parse |
logical; indicates whether a parseable expression should be returned (typically needed for super scripts), or a simple character string without special formatting. |
x |
object of class units, to plot along the x axis, or, if y is missing, along the y axis |
y |
object to plot along the y axis, or missing |
xlab |
character; x axis label |
ylab |
character; y axis label |
... |
other parameters, passed on to plot.default |
units_options can be used to set and change the defaults for
sep, group and doParse.
oldpar = par(mar = par("mar") + c(0, .3, 0, 0))
displacement = mtcars$disp * as_units("in")^3
# an example that would break if parse were (default) TRUE, since 'in' is a reserved word:
units_options(parse=FALSE)
make_unit_label("displacement", displacement)
units_options(parse=TRUE)
units(displacement) = make_units(cm^3)
weight = mtcars$wt * 1000 * make_units(lb)
units(weight) = make_units(kg)
plot(weight, displacement)
units_options(group = c("(", ")") ) # parenthesis instead of square brackets
plot(weight, displacement)
units_options(sep = c("~~~", "~"), group = c("", "")) # no brackets; extra space
plot(weight, displacement)
units_options(sep = c("~", "~~"), group = c("[", "]"))
gallon = as_units("gallon")
consumption = mtcars$mpg * make_units(mi/gallon)
units(consumption) = make_units(km/l)
plot(displacement, consumption) # division in consumption
units_options(negative_power = TRUE) # division becomes ^-1
plot(displacement, consumption)
plot(1/displacement, 1/consumption)
par(oldpar)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.